Machinery and processes of the industrial arts, and apparatus of the exact sciences (1869)
Barnard, Frederick A. P. (Frederick Augustus Porter), 1809-1889 · Washington, Govt. print. off. · leaf 579
all the forms of apparatus exhibited, designedto illustrate the relations of light to electricity, was a combination pre-sented by the society for the construction of physical apparatus ofGeneva, and invented by Mr. De La Rive, in which are reproduced inminiature all the most striking phenomena of… … the axis, while the polar regions are crowned by two bell-glasses fixed air-tight to the sphere. The arrangement is shown in Fig. 119, in which Fig. 119. B is the sphere, supported on afoot, and C C arethe bell-glasses.These bells areattached to thesphere by tworings of metal in-dicated by the…
Machinery · Scientific apparatus and instruments
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